Nehlen has drawn criticism for his anti-immigrant views and his use of the #ItsOkayToBeWhite hashtag on Twitter. On Tuesday, Nehlen tweeted that he is reading "The Culture of Critique," a book about Jewish culture that's been widely criticized as anti-Semitic.

On Wednesday, Nehlen tweeted, "Nehlen: 'Hey, American Jews, I'm not putting Israel first or compromising pro-White interests for yours, but I will make sure the Islamists who want to murder you (and annihilate Israel off the map) are deported back to their homelands. That's something, right?' "

Nehlen did not immediately respond Wednesday to a Journal Sentinel request for an interview.

Schwartz told CNN the decision to cut ties with Nehlen "was made earlier this month after Bannon was alerted that Nehlen had appeared on a white nationalist podcast."

Nehlen's author page appears to have been removed from the Breitbart website.